Railway-car truck.



-W. H. ARMSTRONG.

RAILWAY GAR TRUCK.

.APPLICATION FILED DBC. 26. 1912` 1,059,102. Patented Apr. 15, 191

3 SHEETS-SHEET 2.

W. H. ARMSTRONG.

RAILWAY CAR TRUCKf APPLICATION FILED DBG. ze. 1912.

Patented Apr. 15, 1913.

3 SHEETS- SHEET 3V UNITED STATES PATENT OFFICE.

WILLIAM H. ARMSTRONG, 0F LOS ANGELES, CALIFORNIA.

RAILWAY-CAR TRUCK.

STRONG, a citizen of the 'United States of America, residing at Los Angeles, 1n the county of Los Angeles, State of California,

have invented a certain new and useful Railway-Car Truck; -and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 'it appert-ains to make and use the same.

This invention relates to improvements in railway-car trucks, and it may be said to yconsist in the provision of the novel and advantageous features and in the novel and improved construction, arrangement, and combination ,of parts and devices as will be apparent fronrthe description and claims which follow hereinafter.

.One object of the invention is to provide a novel and improved car truck in which the wheels are adapted to rotate independently of each other. Another object of the invention is to provide a novel and improved construction for mounting the wheels independently of each f other on the frame.

Another object of the invention is to pro- .fvide novel and improved construction and arrangement for the wheel shafts and the bearings therefor.

Further objects of the invention are tol provide a construction for the truck which rendersw it simple 1n character, efficient in use, economical to manufacture, install, and maintain, strong and durable, easy running both on straight and curved tracks, adapted to avoid excessive heat of the shafts or their bearings, and in which the parts can be uickly assembled and also easily demounted .or renewal or repair.

Other objects and the advantages ofthe invention will be apparent to those skilled in the art from a consideration of the following description of preferred forms of construction embodying the invention, taken in connection with the accompanying drawings in which,

Figure 1 is a partly broken plan View of a,.truck embodying the invention; Fig. 2 is a side elevation of the truck, with a portion f thereof shown in section taken on the line 2-2 of Fig. 1; Fig. 3 is a longitudinal sectional view taken on the line 3 3 of Fig. 1; Fig. 4 is a View of the truck, partly in end elevation and partly in section taken on the 1,059,102. Specification of Letters Patent.

' Application tiled December 26, 1912. Serial No. 738,759.

-To all whom it mag concern.'

Be 1t known t at I, WILLIAM H. ARM- plan view of another form of truck embodying the invention; Fig. 6 is a partly sectional view taken on the line 6-6 of Fig. 5; and Fig. 7 is another View of the truck shown in Figs. 5 and 6, partly in end elevation and partly in section taken on the line 7-7 of Fig. 5.

Like parts are designated by similar characters in the several views.

The top member 11 of the truck is preferably made in one piece of cast steel and formed to provide end portions 12 having the central -part 13 thereof depressed to afford clearance for draw-bars and brakerods, outer side portions 14 connected by A, aced cross portions 15, and inner side poryitlons 16 spaced from arid in parallel with the outer side portions 14. Between the outer side ortions 14 and the inner side portions 16 of the top member 11 are arranged the wheels 17 having on each side thereof stub shafts 18 which are adapted to fit in bearing blocks 19 suitably carried by the to member 11. As shown, each of the stu shafts 18 and the bearing blocks. 19 are formed to provide a plurality of. raceways 20 therein, and balls 21 are disposed in the stub shafts 18 and the bearing blocks 19 to effect a multiple ball bearing for the stub shafts 18.

As seen in Figs. 1, 2, 3 and 4, the stub vshafts 18 on the in'ner side of the wheels 17 are provided with extensions 22, and the wheels 17 may be independently driven by means of motors 23 mounted on supports 24 which are arranged between the end portions 12 and the cross portions 15 and secured by bolts 17; the shafts 25 of the motors 23 eing connected to the extensions 22 by means of gearings 26 in the housings 27. The outer side portions 14 and the inner side portions 16 of the top member 11`are preferably channel form, and the side portions 14/ may have the central part 28 thereof of increased height, Fig. 2. Theupper of a groove 29 whereby they are iitted over the lower end portion of the side portions 14 and 16, and bolts 30 may be passed throu h the side ortions 14 and' 16 and through te bearingy locks 19 and through supporting bars 31 on the under side of the lower of the bearing blocks 19; the supporting bars 31 having the end portions 32 thereof inclined Patented Apr. ,15,1 913.

raceways 20 to be interposed between 'thethe two-part bearings 19 are provided with be a upwardly and secured to the side portions 14 and 16 by bolts 33. Hard grease or other lsuitable lubricating material may be placed in tli raceways 20, and cover plates 34 may xed on the sides of the bearing blocks 19 by means of suitable screw-bolts 35. Ad-

' ditional bolts 36 may be passed through the bearing blocks 19 to assist in holding together the complementary parts of .the bearing blocks. Between the supporting bars 31 and the side portions 14 and cross portions 15 are fitted spacin blocks 37 secured inposit-ion by means of olts4 38 passing through the side portions 14 and cross portions 15 and through the spacing blocks and the supporting'b'ars 31. Between the cross portions 15 is swingably mountedthe yeldinglysupported bolster 39 which is provided with a center plate 4t2-having the usual opening 41 for the king bolt, not shownand with upwardly projecting stop blocks 42.

Asseen in Figs. 1, 2, V3 and 4, the bolster 39 may be mounted on coiled springs 43 resting on supporting plate 44 having thereon pivot rods 45 to which are connected one endof arms 46; the other end of the arms i6 being mounted on pivots 47 on the cross portions 15. Suitable co-actin stops or buf-- fers may be provided on the olster 39 and cross portions 15.-

Inthe 'construction shown in Figs. 6

and 'fthe vbearin blocks 19 are slidably mounted in guide rames 49 which have the upper end thereof secured to the side por-` tions 14 and 16 of the topmember 11 and have the lower end thereof. restin on the straps 52 to which they are secured y screw bolts 51. The end portions 53 of the straps 52 are upwardly inclined and secured to the end-portions 12 by bolts 54. Equalizers 55,

vcrossconnected in pairs bybars 56, havev the end portionsthereof fitted over projections 57 inthe grooves 58 in the topo the .bearing blocks 19; suitable springs 59 being disposed between the equalizers 55 and the side iportions 14 and 16,1;A In this case the bolster 39 is mounted on` ,elliptic leaf springs 60 to permit of raising the bolster 39 so that instead of oncoiled springs 43, and the part of the side portions 14 and 16 abo've .the bolster 39 are formed to provide arches 61 member, abolster1 carried by the top mem,

ber, wheels, stub shafts on opposite sides of each of the wheels, supporting bars afiixed to the top member, bearing blocks for each end portion of said stub shafts arranged between the to member and the support-ing bars` said stub shafts and said bearing blocks formed to provide a plurality of -raceways therein, and balls arranged in said raceways, substantially as described. y

2. A railway car truck, comprising a top member, a bolster carried bythe topv memn.r, wheels, stub shafts on the sides of each of the wheels, bearing blocks for the stub shafts carried by the top member, extensions on the inner stub shafts, motors carried by 'the top member, and operat-iveconnections between the motors and said extensions.

3. A railway car truck comprising a top member, a bolster carried bythe top meinbe'r, wheels, vstub shafts on tliesides of each of the wheels, bearing blocks carried bv the top member, said stub :shafts andfsaidibear ing blocks formed to provide Y 'raceways therein, balls arranged in said raceways, eX- tensions on the lnner stub shafts, motors cerl ried by the top member, and operat-ireconnections between the motors and said extensions, substantially as described.

' 4. A railway car truck, comprising a top member formed to provide end portions, and outer side portions, and inner side portions spaced from the .outer side ortions, and spaced cro-ss portions connecte between thc inner and outer side portions, a bolster can ried by the cross portionsawheels arranged between the outer and inner side portions, stub shafts on opposite sides of eacn of the wheels, supporting bars affixed to the top member, bearing blocks for each of the stubshafts arranged between said supporting bars and said outer and inner side portions of the top member, and bolts passing through said outer and inner side portions, bearing' blocks, and supporting bars. V

5. A railway ear truck, comprising a top member consisting of end portions,'and outer sideportions, and inner side portions spaced from the outer side port-ions, and cross portions connected betweeu the inner and outer side portions, a bolster carried by the cross portions, wheels arranged between the outer and inner side portions, stub shafts on the sides of each of the wheels, bearing blocks for each end portion or the stub shafts carried by said outer and inner side portions,

said stub shafts and said bearing blocks formed to provide raceways, and balls arranged in said raceways, substantially as described.

6. A railway car truck, comprising a top member consisting of end portions, and outer side portions, and inner side portions spaced from the outer side port-ions, and

vspaced cross portions connected between the inner and outerwsidcportions, u bolster can extensions on. the inner 'outer and' inner side portions,

ried by the cross portions, wheels arranged between the outer and inner side portions, stub shafts on the sides of each of the wheels, bearin blocks for carried by the inner and outer side portions, stub shafts, motors carriedby the top member, and operative connections between the motors and said eX- tensions, substantially as described.

7. A railway car truck, comprising a top member formed to provide end portions having the central part thereof depressed, and outer side portions,.and inner side portions spaced from the outer side portions, and cross portions connected with the inner and outer side portions, a'bolster carried by the cross portions, wheels arranged between the outer and inner side portions, stub shafts on the sides of each of the wheels, bearing blocks for the stub shafts carried by said said stub shafts and said bearing blocks formed to provide raceways, balls arranged in said raceways, extensions on the inner stub shafts, motors carried by the top member, and operative connections between the motors and said extensions, substantially as described.

8. A railway car truck, comprising a one# piece top member of cast steel formedto provide end portions, and outer side portions, and inner side portions spaced from the outer side portions, and spaced cross portions connected with the outer and inner side portions, a supporting plate swingably mounted on the cross portlons, springs resting on the supporting plate, a bolster mounted on the springs, sald side' portions forme with arches above the bolster for the purpose set forth, wheels arranged between the outer and inner side portions, stub shafts on" the sides' of each Aof the wheels, bearing blocks for the stub shafts carried by said inner and outer portions, said stub shafts and said bearing blocks formedy to provide raceways therein, an'd balls arranged in said raceways, substantially as described. Y

the stub shafts- 9. A railway car truck, comprising a top member formed to provide end portions, and outer side portions, and inner side portions spaced from the outer side ortions, and cross portions connected with t e inner and outer side portions, a supporting plate swingably mounted on the cross portions, springs resting on the supporting plate, a bolster mounted on the sprin s, said side portions formed with arches a ove the bolster for the purpose set forth, blocks removabl interposed between the bolster and said arc es, wheels arranged between the outer and inner sideportions, stub shafts on the sides. of each of the wheels, and bearing blocks fort-he stub shafts carried by said inner and outer side portions, substantially as described.

l0. A railway car truck, comprising a one--piece top member of cast steel formed to provide end portions, and outer side portions, and inner side portions spaced from the outer side portions, and cross portions yconnected with the inner and outer side portions, a supporting plate carried by the cross portions, springs resting on the supporting plate, a bolster mounted on the springs, said side portions formed with arches above the bolster for the purpose set forth, wheels arranged between the outer and inner'side portions, stub shafts on the sides of each of the wheels, bearin blocks for the stub shafts carried by the inner and outer ide portions, said stub shafts and said bearing blocks each formed to provide a plurality of raceways therein, and balls arranged in said raceways, substantially as. described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses at Los Angeles Vcounty of Los Angeles, State of California,

this 18th day of December A. D. 191.2.

WILLIAM H. ARMSTRONG.

Witnesses:

FRED A. MANSFIELD, ALEX. H. LIDDERS. 

